2nd Gen has 8 GB, 16 GB, 32 GB
3rd Gen has 8GB(But is the same as the 2nd), 32 GB, 64 GB
3rd Gen 32 GB and 64 GB are faster, have a mic, and that's all I think.
Yes. The second and third generation iPod Touch are the same size. Ipod Touch 4G or fourth generation, is thinner and weighs less.
This only works on iPod touch third generation, iPad,or iPhone and you have to have iOS 4. If you are using the second generation, you will have to jailbreak you iPod touch.
Yes. iPod touch 3rd generation is just a 2nd generation iPod touch that's faster and includes support for newer operating systems.
Please explain a little bit more. You can physically set a 2nd generation on top of a 3rd generation, if that is what you are asking.
iPod Touch 3rd Generation has Voice Control Bluetooth and will come with 3.1.1 firmware, but if you upgrade your ipod touch 2nd generation to 3.1.1 you will get bluetooth. Its also faster.
The 3rd generation and 2nd generation iPod Touch are the same size and shape. Neither is skinnier or thicker than the other.
The fourth generation ("video") iPod Touch is not that much different than the previous generations (second, third, and first), but only adds FaceTime and a video camera. If you have the second or third generation, there's no need. However, if you have the first generation, it's not a bad thing to have the newer one because the newer one is slimmer and faster.
Second and third generation iPod touches have internal speakers.
There is none. iPod Touch 3G IS third generation.
You shouldn't use an iPod Touch case designed for the second and third generations on a fourth generation iPod Touch. The fourth generation iPod Touch has a camera and microphone, so the third generation case would cover both of those up, and would not fit it anyway.
third generation
There is no attachment for the first, second, and third generation iPod Touches. However, the fourth generation iPod Touch has a built in video camera and still camera. So, you must have the fourth generation iPod Touch to use a camera on the iPod Touch.